A through-wall welding battery correction tool for welding components

Abstract

The utility model discloses a kind of corrects through-wall welding battery butt joint piece tool, including cuboid stainless steel block, battery shell partition and butt joint piece, the cuboid stainless steel block is integrated structure, made of high-strength stainless steel material, ensure that structure is stable and not easy to deform.The utility model is designed using pure mechanical structure, without external power source such as electric energy, air pressure, not only reduce equipment use cost and energy consumption, also avoid the production interruption caused by power equipment failure, comply with the production concept of environmental protection and energy saving, and operation process is noiseless, no pollutant emission, effectively improve production environment;Compared with manual adjustment mode, the tool can complete the height correction of a group of butt joint pieces in a short time through preset stepped groove reference plane, correction efficiency is improved, and the height error of butt joint piece is controlled within small error range, can effectively avoid the lead flying phenomenon in through-wall welding process, improve welding qualification rate, significantly improve production quality and efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of welding work technology, and in particular relates to a tooling for calibrating through-wall welded battery pairs. Background Technology

[0002] In the production and processing of through-wall welded batteries, the height consistency of the weldment directly affects the welding quality of the through-wall welding process. Currently, the industry commonly uses manual adjustment of the weldment height, which relies entirely on the operator's visual judgment and is prone to inconsistent weldment heights due to subjective errors. This height deviation can cause lead splatter during the through-wall welding process, resulting in welding defects. At the same time, repeated manual adjustments consume a lot of time, leading to low production efficiency and failing to meet the needs of large-scale production.

[0003] In addition, the few existing devices used to adjust the height of welded parts rely on electricity or pneumatic power, which not only increases equipment costs and energy consumption, but also has problems such as complicated operation and inconvenient maintenance, further restricting the stability and economy of the production process. Utility Model Content

[0004] This utility model addresses the problems existing in the prior art by proposing the following technical solution: A tooling for calibrating through-wall welded battery butt welding parts includes a rectangular stainless steel block, a battery casing partition, and a butt welding part. The rectangular stainless steel block is an integral structure made of high-strength stainless steel to ensure structural stability and resistance to deformation. A set of stepped grooves extending along the length direction are provided at the bottom of the rectangular stainless steel block.

[0005] As a preferred embodiment of the above technical solution, the stepped groove is composed of a level busbar plane, a battery casing partition wall height limiting groove, a leveling butt weld top plane step, and a chamfer connected in sequence; the leveling busbar plane, the battery casing partition wall height limiting groove, and the leveling butt weld top plane step are all horizontal planes, and the three rise sequentially from the inside to the outside along the bottom of the cuboid stainless steel block.

[0006] As a preferred embodiment of the above technical solution, the guide angle is an arc-shaped structure, and the guide angle is set on the side of the top plane step of the flat welding component away from the height groove of the battery casing partition wall.

[0007] As a preferred embodiment of the above technical solution, the length of the cuboid stainless steel block is consistent with the length of the butt welding parts of the through-wall welded battery, and the width of the cuboid stainless steel block is consistent with the width of a single butt welding part.

[0008] As a preferred embodiment of the above technical solution, the flatness error of the flattened busbar plane, the battery casing partition wall limiting height groove, and the flattened butt weld top plane step does not exceed 0.02mm; the arc radius of the chamfer is 2mm.

[0009] The beneficial effects of this utility model are as follows: This application employs a purely mechanical structure design, eliminating the need for external power sources such as electricity or air pressure. This not only reduces equipment operating costs and energy consumption but also avoids production interruptions caused by power equipment failures, aligning with the concept of environmentally friendly and energy-saving production. Furthermore, the operation process is noiseless and produces no pollutants, effectively improving the production environment. Compared to manual adjustment methods, this fixture, through a pre-set stepped groove reference plane, can complete the height correction of a set of weldments in a short time, improving correction efficiency. Moreover, the height error of the weldments is controlled within a small error range, effectively preventing lead flying during through-wall welding, thus increasing the welding qualification rate and significantly improving production quality and efficiency. The tooling is a one-piece rectangular stainless steel structure, which is simple in structure and compact in size. The length is set to 150-250mm, the width to 22-28mm, and the height to 55-75mm, depending on the number of welding parts. It is lightweight, with a single set weighing no more than 450g, making it easy for operators to carry and store. At the same time, the stainless steel material has the characteristics of high strength, wear resistance, and corrosion resistance, which increases the service life of the tooling and reduces the frequency of tooling replacement and maintenance costs. The operation process requires no professional skills training. Operators only need to master two steps, "fitting in and tapping," to complete the calibration, which reduces labor costs and the operational threshold. Furthermore, by visually observing the fit between each plane of the tooling and the corresponding part, it is possible to quickly determine whether the calibration is in place, without the need for additional testing equipment, which further simplifies the production process. Attached Figure Description

[0010] Figure 1 The diagram shown is a front three-dimensional structural schematic of the tooling for correcting through-wall welding of battery butt joints provided in an embodiment of the present invention. Figure 2 The diagram shows a matching assembly structure of the tooling for correcting through-wall welding butt welds provided in an embodiment of the present invention.

[0011] Legend: 1. Rectangular stainless steel block; 2. Busbar plane; 3. Height groove; 4. Planar step; 5. Chamfer; 6. Partition wall; 7. Butt welded parts. Detailed Implementation

[0012] To make the objectives, technical solutions, and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0013] like Figure 1 and Figure 2As shown in the embodiment of this utility model, the tooling for calibrating through-wall welded battery butt welding parts first selects 304 stainless steel plate as the raw material for the rectangular stainless steel block 1. This material has good rigidity and corrosion resistance, which can ensure that the tooling maintains its accuracy during long-term use. The plate is processed into a rectangular blank with a length consistent with the arrangement length of the butt welding parts 7, which can be set to 150mm, 200mm, etc., depending on the battery model. The width is consistent with the width of a single butt welding part 7, usually 25mm, and the height is 65mm. After cutting, the blank is deburred to avoid scratching the parts during subsequent processing and use.

[0014] Next, a high-precision CNC milling machine is used to process the stepped groove. Taking the top surface of the rectangular stainless steel block 1 as the reference surface, the busbar plane 2 is first machined and leveled, so that its vertical distance from the top surface is 60mm, and the flatness error is controlled within 0.02mm. The surface is polished to a roughness Ra of less than 0.8μm to prevent scratching the busbar. Then, the battery case partition wall 6 limiting height groove 3 is machined on its outer side. This plane is 55mm from the top surface, 5mm higher than the leveled busbar plane 2, and is aligned with the standard height of the battery case partition wall 6. The height is matched, the flatness error does not exceed 0.02mm, and the surface roughness is Ra1.6μm; then the top plane step 4 of the weldment 7 is machined outward to flatten it, the vertical distance from the top surface is 48mm, which is 7mm higher than the limiting height groove 3 of the battery shell partition 6, corresponding to the standard height of the weldment 7, and the machining accuracy is consistent with the limiting height groove 3 of the battery shell partition 6; finally, the chamfer 5 is machined on the outside of the top plane step 4 of the weldment 7 with a ball end mill to ensure that the arc radius is 2mm and the surface is polished smooth without sharp edges.

[0015] After processing, the tooling needs to be fully inspected. The flatness and parallelism of each plane are checked using a marble platform and dial indicator to ensure that they meet the design requirements. During the trial calibration and verification, the tooling is fitted into the battery welding part 7, battery shell partition 6 and busbar to be calibrated. The top surface of the tooling is evenly tapped with a 250g rubber hammer with a force of 5N. The height error of the welding part 7 should be within 0.02mm and there should be no damage to the parts.

[0016] In actual use, the operator first fixes the battery on the fixture, holds the rectangular stainless steel block 1 with both hands, aligns the stepped groove with the battery component, guides the fixture to fit in through the chamfer 5, ensures that each plane fits the corresponding component, then taps the top surface of the fixture lightly with a rubber hammer, removes it and checks the height of the welded part 7. The whole process takes only about 4 seconds, greatly improving efficiency.

[0017] Working principle: The system achieves precise height correction of the weldment based on the working principle of multi-reference synchronous positioning and rigid leveling. The height-limiting groove 3 of the battery casing partition 6 serves as the core reference, its height perfectly matching the fixed height of the battery casing partition 6. When the fixture is fitted into the battery, this groove forms rigid contact with the top of the battery casing partition 6. Because the height of the battery casing partition 6 is fixed, the reference position of the fixture in the vertical direction is determined, providing a stable reference for other structures. The busbar plane 2 is leveled using this reference, its height consistent with the busbar installation height. When fitting the busbar, it helps to calibrate the horizontal posture of the fixture, avoiding correction deviations caused by tilting. This enhances the stability of the tooling during hammering. The top plane step 4 of the flat weldment 7 is also based on the height limiting groove 3 of the battery shell partition 6, with the height corresponding to the standard height of the weldment 7. When the tooling is hammered, the rigid structure of the cuboid stainless steel block 1 will evenly transmit the force to the step, generating downward pressure on the weldment 7 that is too high, causing it to drop to the standard height, while the weldment 7 that is too low remains unchanged, ultimately achieving uniform height for all weldments 7. The arc structure of the chamfer 5 plays a guiding role during the insertion process, avoiding direct collision between the tooling and the weldment 7 and causing damage, while reducing frictional resistance and facilitating precise alignment.

[0018] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.

Claims

1. A tooling for calibrating through-wall welded battery butt welds, characterized in that: It includes a rectangular stainless steel block (1), a battery casing partition (6) and a butt weld (7). The rectangular stainless steel block (1) is an integral structure. A set of stepped grooves extending along its length are provided at the bottom of the rectangular stainless steel block (1).

2. The tooling for calibrating through-wall welded battery butt welds according to claim 1, characterized in that: The stepped groove is composed of a flat busbar plane (2), a height limiting groove (3) of the battery casing partition (6), a top plane step (4) of the flat welding piece (7), and a chamfer (5) connected in sequence. The flat busbar plane (2), the height limiting groove (3) of the battery casing partition (6), and the top plane step (4) of the flat welding piece (7) are all horizontal planes, and the three rise sequentially from the inside to the outside along the bottom of the rectangular stainless steel block (1).

3. The tooling for calibrating through-wall welded battery butt welds according to claim 2, characterized in that: The guide angle (5) is an arc-shaped structure, and the guide angle (5) is set on the side of the top plane step (4) of the flat welding part (7) away from the height limiting groove (3) of the battery shell partition wall (6).

4. The tooling for calibrating through-wall welded battery butt welds according to claim 1, characterized in that: The length of the rectangular stainless steel block (1) is consistent with the length of the butt welding parts (7) of the through-wall welded battery, and the width of the rectangular stainless steel block (1) is consistent with the width of a single butt welding part (7).

5. The tooling for calibrating through-wall welded battery butt welds according to claim 2, characterized in that: The flatness error of the flat busbar plane (2), the height limiting groove (3) of the battery casing partition wall (6), and the top plane step (4) of the flat butt weld (7) does not exceed 0.02mm; the arc radius of the guide angle (5) is 2mm.

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